Personally I have my own Dokuwiki personal wiki served locally on my machine where I keep anything of interest to me and serves as my own personal knowledge base. I might release it to the public one day I’m not too sure.
But I’m curious to know if any of you folks here maintain your own personal knowledge base and if so what software do you use for it?
I use a neat little snap called Jotit, which syncs to my Nextcloud.
I also keep a well-curated long list of browser bookmarks.